//自定义线性渐变
@mixin linear-gradient($angle, $details...){
  //ie6789
  filter:progid:DXImageTransform.Microsoft.Gradient(startColorStr='transparent', endColorStr='#F3F3F7', gradientType='0');
  //ie10以上
  background-image: linear-gradient($angle, $details);
  //ie6
  // _background-color:color(black);
  // _filter:alpha(opacity=50);
}

@mixin bg-linear($deg: 0deg, $startColor: #000000, $endColor: color(white)) {
  filter:progid:DXImageTransform.Microsoft.Gradient(startColorStr='#{$startColor}', endColorStr='#{$endColor}', gradientType='0');
  background-image: linear-gradient($deg, $startColor 0%, $endColor 100%);
}
